CVE-2022-3989Network attack vector

Remote code execution via unrestricted PHP upload

Published Dec 12, 2022 · Updated Apr 22, 2025

Unrestricted file upload in StylemixThemes Motors - Car Dealership & Classified Listings Plugin before 1.4.4 allows remote authenticated users to upload PHP files. The stm_ajax_add_a_car_media nopriv AJAX action accepts dangerous extensions without adequate type validation, placing attacker-controlled PHP on the WordPress server. Account sign-up access is required; execution and resulting compromise depend on where uploaded files are stored and served.

CVSS severity8.8
High
EPSS probability1.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in StylemixThemes Motors - Car Dealership & Classified Listings Plugin before 1.4.4 allows remote authenticated users to upload PHP files. The stm_ajax_add_a_car_media nopriv AJAX action accepts dangerous extensions without adequate type validation, placing attacker-controlled PHP on the WordPress server. Account sign-up access is required; execution and resulting compromise depend on where uploaded files are stored and served.

The record

CVE
CVE-2022-3989
Published
Dec 12, 2022
Updated
Apr 22, 2025
Vendor
StylemixThemes
Product
Motors - Car Dealership & Classified Listings Plugin
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 12, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.4.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

StylemixThemes · Motors - Car Dealership & Classified Listings Pluginversion=0 <1.4.4

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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